<p style='text-align:justify;font-family:Arial;font-size:10.0pt'>The Bush administration rushed to defend new espionage legislation Monday amid growing concern that the changes could lead to increased spying by U.S. intelligence agencies on American citizens. But officials declined to provide details about how the new capabilities might be used by the National Security Agency and other spy services. And in many cases, they could point only to internal monitoring mechanisms to prevent abuse of the new rules that appear to give the government greater authority to tap into the traffic flowing across U.S. telecommunications networks. Officials rejected assertions that the new capabilities would enable the government to cast electronic "drift nets" that might ensnare U.S. citizens [and] that the new legislation would amount to the expansion of a controversial